X-RAY STUDY OF DEFORMATION OF NB-RE ALLOYS.
Abstract
The bcc alloys of the terminal solid solution of rhenium in niobium were investigated by x-ray diffraction methods, supplemented by microhardness measurements. The hardness was found to increase almost linearly with rhenium percentages. The analysis of the broadening of the powder pattern peaks from the Nb-rich alloys, cold worked by filing, showed evidence for stacking faults and/or twin faults. The alloys with larger rhenium concentrations were brittle, and fractured when attempting to file. The analysis of the shapes of the diffraction profiles from powders of these brittle alloys (produced by hammering with steel plates) indicated that the broadening was due predominantly to platelets bounded by cube planes. This result was consistent with the data from (1) integrated intensity measurements and (2) Laue patterns from single cleavage facets which showed evidence for cleavage fracture on (100) planes. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1964
- Accession Number
- AD0603473
Entities
People
- C. N. J. Wagner
- E. N. Aqua
Organizations
- Yale University